Rear Window Defogger System does not Operate: Description

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When the rear window defogger switch, which is built into the heater control assembly*1 or multi-display*2, is operated, the operation signals are transmitted to the A/C amplifier assembly through LIN*1 or CAN*2. When the A/C amplifier assembly receives the signals, it turns on the RR DEF relay to operate the rear window defogger.

*1: w/o Navigation System
*2: w/ Navigation System